Truck



FIG. 1 is a front perspective view of a truck which embodies our new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear end elevational view thereof; and

FIG. 5 is a front end elevational view thereof.

The left side is a mirror image of the right side. 

The ornamental design for a truck, substantially as shown and described. 